In this post, we are going to cover the pod priority class, pod disruption budget, and the relationship of these constructs' with pod eviction. Okay, enough of talking, let’s start with pod priority class.
PriorityClass and Preemption
PriorityClass is a stable Kubernetes object from version 1.14, and it is a part of the scheduling group used for defining a mapping between priority class name and the integer value of the priority. PriorityClass is straightforward to understand; the higher the value of the integer, the higher is the priority. Take, for example, a PriorityClass with an integer value of ten and another with an integer value of twenty; the later one holds a higher priority than the first one.